Mobile Fidelity (MFSL) Geodisc Cartridge Alignment Tool

Finally available again after too long an absence, this cartridge alignment device is simple to use and extremely accurate

Mounting and aligning cartridges can be a tedious and time-consuming chore. Not with the Mobile Fidelity Sound Lab GEODISC! This cartridge alignment device is simple to use and extremely accurate. Just fit the disc on your platter and align using the simple printed graph based on the Baerwald alignment curve. You will never realize the full potential of your cartridge without the proper set-up tool.

Got this to check cartridge overhang on so called factory installed cartridge on a high end manufacturers turntable.Cart was too far forward by 4-5mm.Used this simple tool and now turntable sounds loads better!Highs clearer and no distortion, bass also better!Highly recommended even if your turntable comes installed with a cartridge.

Much better than the protractor supplied with my Audio Technica LP5 and a printed one from the internet (this especially because it's tricky to measure spindle to tonearm pivot distance for turntables that don't specify it). Basic protractors are ok for some cartridges (including the one supplied with the LP5), but shibata stily (such as the one found on my LP Gear AT95SA) are less forgiving of poor allignment. I spent countless hours trying to allign it with other stuff, but the GeoDisc solves everything (provided you can propperly align the AB line so it points exactly at your tonearm pivot: this is quintessential.